A new optical system for 3-dimensional mapping of the cornea

Sandra Franco; José B. Almeida

doi:10.1117/12.727060

18 July 2007 A new optical system for 3-dimensional mapping of the cornea

Sandra Franco, José B. Almeida

Proceedings Volume 6631, Novel Optical Instrumentation for Biomedical Applications III; 66311J (2007) https://doi.org/10.1117/12.727060
Event: European Conferences on Biomedical Optics, 2007, Munich, Germany

Abstract

In this work the authors present an optical corneal tomographer that uses two Scheimpflug cameras attached to an innovative illumination system that allows a rotary scanning of the entire cornea. The measurements are made from corneal optical sections obtained by illumination with a collimated beam expanded in a fan by a small cylindrical lens. This lens is provided with motor driven rotation in order to perform automated rotary scan of the whole cornea. The authors expect to achieve a scanning speed that will allow producing complete tomography maps without consideration of eye movements. Two Scheimpflug cameras are used to capture the images of the optical sections. With this system it is possible to obtain 3-D representation of the corneal thickness as well as corneal topography. Maps of the corneal thickness and elevation maps are shown. As Scheimpflug cameras are used, it is expected to obtained data from the lens too.

Citation Download Citation

Sandra Franco and José B. Almeida "A new optical system for 3-dimensional mapping of the cornea", Proc. SPIE 6631, Novel Optical Instrumentation for Biomedical Applications III, 66311J (18 July 2007); https://doi.org/10.1117/12.727060

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KEYWORDS

Cornea

Cameras

Eye

Fluctuations and noise

Image segmentation

Imaging systems

Optical spheres

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